Align the smaller slide against the bottom of the drawer. Lay the drawer on its side. The slide needs to be flush against the drawer’s bottom edge. The slide's thicker, squared end should be flush with the drawer's front edge.

Mark the slide placement in pencil. Draw directly on the drawer. Create a thick, dark line right above both ends of the slide. Also mark the spots where the slide will be screwed to the drawer.

Predrill holes into the drawer. Get an electric drill with a drill bit approximately 2⁄3 in (1.7 cm) wide. Drill about 1⁄2 in (1.3 cm) into the screw spots you marked earlier.

Screw the slide to the drawer. Set the slide back on the drawer. Align its top edge with the mark you made earlier, adjusting the slide so the holes are over the spots you drilled. Place a 1⁄2 in (1.3 cm) screw in each hole. Fasten the slide in place with an electric screwdriver.

Attach the slide on the other side of the drawer. Find the other small slide piece. Flip the drawer over so the other side is facing up. Then, line up and attach the other slide the same way you did with the first one.

Set the back brackets in the slide frame. Find the L-shaped metal brackets as well as the 2 remaining slide pieces. Fit a bracket into 1 end on each slide. The brackets easily slide into the frame track. The free ends of the brackets will attach to the cabinets with screws.

Align the slide frames with the bottom of the cabinet. Place the slide frame pieces inside the cabinet. Push the brackets all the way to the back. The frame pieces should be flush with the bottom edge of the cabinet and rest against the side walls.

Use a level to straighten the frames. The frames need to be level from front to back. To check this, set a carpenter's level on top of the frame. Reposition each frame as needed until the leveling tool is even from left to right.

Mark the position of the frames with a pencil. Mark where the frames rest on the cabinet. You can draw directly onto the cabinet with a pencil. Create the lines right over the ends of both frames. Then, mark the spots where the brackets and rails will be screwed in place.Predrill holes into the wood. Drill into the spots you marked earlier. These holes prevent the screws from breaking or cracking the wood. Use a drill bit about 2⁄3 in (1.7 cm) wide to create holes about 1⁄2 in (1.3 cm) deep.

Screw the frame pieces in place. Set 2 1⁄2 in (1.3 cm) screws in each bracket. Use an electric screwdriver to secure the frame to the cabinet. Then, set another screw in the front end of the bracket to secure the slide in place.

Fit the drawer into the cabinet’s slide frames. Line the drawer's slide rails up with the cabinet's rail frames. The drawer's slides should fit in the frames. Push the drawer in to make sure it glides smoothly. If the pieces are installed correctly, the drawer will come to a gentle stop inside the cabinet.

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